Latest ensemble forecasts from the Japan Meteorological Agency and global models indicate a high-pressure ridge favoring 33–34°C afternoon peaks in Tokyo on August 7, with the Pacific High maintaining above-normal summer warmth and the urban heat island amplifying readings. Slight model spread arises from variable cloud cover and possible afternoon convection, which could cap or boost the daily maximum by 1–2°C depending on timing and intensity. High humidity and light winds typical of early August further influence surface temperatures. Traders assign nearly equal weight to the top two outcomes because short-range model runs remain sensitive to these mesoscale factors ahead of final resolution.